The subject item is best identified as Omega Constellation 'Pie-Pan' Chronometer, Ref. 168.005, Mid-1960s (c. 1963-1966), Omega Watch Co., Bienne, Switzerland. During the 1960s, Omega's output rivaled Rolex in terms of pure mechanical prestige, with the Constellation serving as their flagship dress chronometer. The Omega Constellation was born in 1952 to celebrate the brand's absolute dominance at the rigorous Geneva Observatory precision trials. The Reference 168.005 is defined by its dimensional 'pie-pan' dial and sharp 'dog-leg' faceted lugs, requiring precise, unpolished edges to retain its architectural beauty. This watch epitomizes the mid-century 'Mad Men' era, designed for professionals who valued scientific accuracy as much as sharp, modernist aesthetics.

Baseline auction values for authentic steel Ref. 168.005 models on aftermarket straps rest tightly between $1,400 and $1,800, as evidenced by recent $1,429 (Chiswick) and $1,750 (HQ Milton) clearing prices for silver-tone-dial examples. Examples fitted with period-correct Omega 'Beads of Rice' bracelets or in pristine retail condition escalate to $2,200 to $2,700. The subject item features a highly desirable pure stainless steel case (commanding a premium over gold-tone-capped variants, which often clear near $1,000) and a rare black dial. If the black dial is verified as factory original rather than a later refinish, it acts as a substantial value multiplier. However, as this is evaluated as a watch-only configuration without a documented service history or original bracelet, the FMV is positioned to reflect robust auction demand while leaving headroom for dealer retail premiums.